New dynamic diamond anvil cells for tera-pascal per second fast compression x-ray diffraction experiments
Zs Jenei1, H P Liermann2, R Husband2
1High Pressure Physics Group, Lawrence Livermore National Laboratory, 7000 East Avenue, L-041, Livermore, California 94550, USA.
The Review of Scientific Instruments
|July 1, 2019
Summary
This study introduces a new experimental setup for time-resolved X-ray diffraction, enabling the study of materials under rapid compression. Researchers achieved high compression rates, opening new avenues for materials science research.
Area of Science:
- Materials Science
- High-Pressure Physics
- Condensed Matter Physics
Background:
- Dynamic diamond anvil cells (dDACs) are crucial for studying compression-rate dependent phenomena.
- Previous dDAC limitations hindered time-resolved studies at high compression rates.
Purpose of the Study:
- To describe a novel experimental setup for time-resolved X-ray diffraction during fast material compression.
- To enable the study of dynamic processes under extreme pressures.
Main Methods:
- Utilized improved dDACs with powerful piezoactuators for fast compression.
- Employed a high-flux 25.6 keV X-ray beam and fast GaAs LAMBDA detectors.
- Achieved effective X-ray diffraction pattern collection rates of up to 4 kHz.
Main Results:
- Demonstrated compression rates of up to 160 TPa/s for gold using a 2.5 ms fast compression.
- Successfully applied the setup to low-Z compounds at lower compression rates.
- Showcased the high temporal resolution of the experimental setup.
Conclusions:
- The developed setup significantly advances the study of materials under dynamic compression.
- Offers potential for future research, including mimicking seismic wave propagation.
- Enables precise control over pressure profiles for advanced investigations.
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